Multiple-function controlling throttle-valve.



APPLICATION FILED MAR. 25, 1912.

Patented June 17, 1913.

UNET STAFF ENT @FFlGF.

JOHN GEORGE LEYNER, OF DENVER, COLORADO.

To all whom it may concern:

Be it known that I, JOHN GEORGE LEYNER, a citizen of the United States of America, residing in the cit-y and county of Denver and State of Colorado, have invented a new and useful Multiple-Function Controlling Throttle-Valve, of which the following is a specification.

My invention relates to an improved multiple function controlling throttle valve, and the objects of my invention are: First. To provide a multiple function throttle valve that is adapted to control the admission of any suitable actuating fluid to different cylinders that are arranged to actuate different mechanisms of any kind or character, of a machine using different cylinders and pistons, or other actuating fluid machines that are arranged to operate in successive and operative order so that the different machines may perform their respective difiercnt functions in any desired order, my invention being particularly adapted for use on drill-bit forming, sharpening and shanking machines, such as illustrated and described in my pending application, Serial No. 686,133, filed March 25, 1912. Second. To provide a throttle valve mechanism that is adapted for use with pneumatically operated drill Sharpeners, in which the drill steel gripping vise actuating cylinder and piston and the dolly reciprocating engine cylinder and hammer piston are operated in successive order to move the vise to grip a drill steel, and to reciprocate the dolly to form and sharpen rock cutting lips on its end, and then to stop the operating of the dolly and to open the vise to release the drill steel, and also to operate the difierent vises and (lollies used with these machines to perform other forging operations such as shanking drill steel, and the striking of rapid successive blows like a trip hammer. And third, to provide a simple, easily operated, quick working multiple function controlling throttle valve. 1 attain these objects by the mechanism illustrated in the accompanying drawings, in which:

Figure 1 is a front view of the valve chest, the valve and cap for the chest being removed. Fig. 2 is a front view of the valve chest, showing the operating handle, the stop finger and the stops which are en- Specification of Letters Patent.

Application filed March 25, 1912.

Patented June 17,1913.

Serial No. 686,134.

gaged by said finger to limit the movement of the valve. Fig. 3 is a central, vertical section view through the chest, with the cap, valve and other parts in position. Figs. 4: and 5 are perspective views of the valve showing respectively the front and rear side-s of the same. Figs. 6, 7 and 8 are front views showing the three positions of the valve relatively to the various ports. And Fig. 9 is a view in elevation of my throttle valve operatively connected to a pair of piston cylinders, one of which is shown in section. In this view the cylinder in section, exhausts from both its opposite ends back into the valve chest, and the other cylinder exhausts from its own valve chest into the atmosphere.

Similar letters of reference refer to similar parts throughout the several views.

Referring to the drawings: the numeral. 1 indicates a valve chest which is provided with a cover 2. The valve chest is secured by any suitable means against a boss portion 3, formed on the adjacent side 4 of any machine itis desired to attach the throttle valve to. I preferably, however, secure the valve chest to the boss by stud bolts 5, which are threaded to the boss portion 3 of the machine to which the valve is secured. These stud bolts extend through the valve chest and its cover and their ends are provided with nuts 6, which removably secure the cover to the valve chest.

My invention contemplates its use in any machine that permits an oscillating cycle movement of the valve to control the opening and closing of a plurality of ports in successive order. I have illustrated in Fig. 9, a View of two different cylinders to which the ports of the throttle valve are operatively connected, in order to illustrate an operative structure.

The valve chest 1 is provided with a bottom wall plate portion, which is arranged to form on its inner side a valve seat 8, for a disk-shaped throttle valve 9. This valve chest is provided with an air inlet aperture 10, through its side, and with an actuating fluid receiving chamber portion 11, between its cover receiving end and the inner face of its valve seat portion. The entrance to the air inlet aperture 10 is threaded and an actuating fluid supplying pipe 12, is threaded to it and is adapted to be connected to a hose or pipe, which I do not illustrate, connecting with a supply of any suitable actuating iluid such as compressed air or steam. This throttle valve 9 is provided at the axial center of its valve seat engaging side with a small centering hub 13, which projects and fits pivotally in a circular recess 14L, formed in the valve seat to receive it. The body of the valve is provided with two inlet ports 15 and 16, that are positioned on opposite side portions of it, that extend entirely through its surface, and also with an exhaust port 17, which is a covered recess port formed in its under side. On one side of it, between the ports 15 and 16, the opposite side of the valve from this exhaust port being a fiat seat portion, the exhaust port is arranged to register with the ports in the valve seat in alternate order as the valve is oscillated on its seat. This throttle valve is a multiple port opening and closing valve and is provided with a valve stem 17, that projects through and beyond the cover of the valve chest, and the outer end of this valve stem is provided with a handle 18, and also with a finger stop engaging member 19, which is secured to the valve stem in a predetermined position relative to the ports 15 and 16 of the valve, and which is arranged to indioate to the operator the port opening and closing movement of the valve during the rotary reciprocal movement, the finger stop engaging member being arranged to reciprocate between two stop lugs 20 and 21, which are placed on the outside of the cover of the valve, as will be presently described. The seat portion 8 of the valve chest is made thick enough to contain the several inlet and exhaust ports that are necessary to convey actuating fluid to the different cylinders or machines the valve is connected to and is arranged to operate. These ports, in the arrangement of the valve herein illustrated, consist of distributing ports 22, 23, 24k, and an exhaust port 25.

The different opening and closing movements of the valve are follows: First. Inasmuch as a starting point is necessary, the finger stop engaging member 19 is set to always stand against the stop lug 20 when the ports 15 and 16 of this valve are closed to all the ports in the valve seat of the valve chest, except that the port 16 registers with the port 22, the finger stop engaging member being so relatively connected to the valve stem as to permit of this, and this port 16 and the port 22 of the valve always stand open when the finger stop engaging member is against the stop lug 20, the stop lug 20 being the point of rest or starting point in the operative reciprocal rotary movement of the finger stop engaging member. These ports 16 and 22, which are open to each other when the finger stop engaging member is at rest at the starting lug 20, con vcy the actuating fluid, which we will assume is flowing into the chamber 11 of the valve chest from the supply pipe and inlet aperture of the valve chest, to an outlet pipe 26, by which the actuatino' fluid is conveyed to the lower end of a cylinder 27, in which a reciprocating piston 28 is mounted, to be used for moving this piston in one direction of its reciprocal movement, or it may be conveyed to any other cylinder or machine or applied to any other desired use. Consequently, when the finger stop engaging member is against the stop lug 20, this port 22 is open and the actuating fluid is in continuous communication through it with the lower end of the cylinder 27, the valve being still at its starting point or lug 20 and not having been moved at all as yet; and starting, then, with the understanding that this port is open, the first operative movement of the valve is obtained by the operator grasping the handle and moving it until the finger stop engaging member is about half way between the two stop lugs, 20 and 21, which movement first moves the port 16 of the valve away from the port 22, and thus closes the port 22, and instantly afterward the port 15 of the valve moves over and opens the inlet port 28, admitting the actuating fluid through the valve port 15 and this port 23, through a port 29, to the top of the cylinder 27, to move the piston 28 in the opposite direction of its reciprocal movement to that in which it was moved by the actuating fluid flowing through the port 22 to its opposite end. The instant, however, the port 22 is closed, the actuating fiuid at the lower end of the piston in the cylinder 27, exhausts back through the pipe 26 into the exhaust port 17 of the valve and is conveyed by it into the exhaust port 25, from which it exhausts into the atmosphere. This first movement of the finger stop engaging member to a point about half way between the stop lugs may be a stop movement at this point for a fraction of a second or for as long a time as desired, or a'stop may not take place there at all. lhe first movement may be a full sweep movement to the second stop lug 21, the movement of the finger stop engaging member and valve de pending altogether on the work of the cylinders under the control of the valve, but as an operator is more than likely to stop a fraction of a second to see that the first cylinder is operating properly before he starts the second one up, the continuation of the advance movement of the finger stop enmember to the stop lug 21 is called its second operative movement, as it starts a second cylinder, by causing its port 16 to register with the distributing port 24:, which conveys the actuating fluid through a pipe or hose 31, to the valve chest 32 of a cylinder 33, which may contain a valve controlled piston of its own, which the actuating fluid operates, or the actuating fluid may be conveyed by the pipe or hose 31 to another fluid operating machine, or put to any desired use. This movement of the valve that causes its port 16 to uncover the port 2%, also causes its port 15 to move around on the port 23, but the port 15 of the valve is made in the arrangement of the valve herein illustratcd, wide enough to still remain open to the port 23 when it is turned around enough to carry its finger stop engaging member against the stop lug 21 and its port 16 over the port 24. Consequently, the ports 15 and 23 are constantly open from the time of the first advance movement of the finger stop engaging member toward the stop lug 21, after closing the port 22, until the port 24 is fully opened and remains fully open all of the time the port 24: is open. Consequently, both cylinders are under the supply of actuating fluid from the throttle valve at the same time. The first cylinder 27, however, is only under the supply of the actuating fluid at its upper end through the port 23. The third or last part of the operating rotary cycle movement of the valve and its finger stop engaging member is a back stroke movement from the stop lug 21 to the starting stop lug 20; this movement is a full sweep movement and it first closes the port 2 1- by its port 16 moving toward the port and then closes the port 23, but opens this port 23 to the exhaust port 17 of the valve, and through it into the exhaust port 25 of the valve chest seat, allowing the actuating fluid at the top end of the cylinder 27 and in the port 23 to exhaust to the atmosphere, and then as the finger approaches and strikes the starting lug 20, again opens the port 22 that leads to the lower end of the cylinder 27 and piston 28. In addition to the above straight progressive oscillating movements of the valve and its finger stop engaging member and handle, the valve can be made to operate the piston 28 reciprocally in its cylinder 27 without admitting the actuating fluid to the port 24; and cylinder 33, by giving to the finger stop engaging member a succession of short reciprocal movements away from the stop lug 20 and back again against the stop lug 20,01 just sutficient stroke to close the port 22 and open the port 23 in successive alternate order. An example of this action of the valve is illustrated and described in my pending application above referred to, where it is arranged to effeet rapid successive hammer striking blows of the movable hammer block against the an vil portion of the drill sharpener illustrated in that application.

The exhaust port 17, and its outlet 25, extend to and out of the valve chest through a boss 25*, and the outlet end in the boss may be threaded, and a pipe may be connected to the exit end of the exhaust port in the boss, and the exhaust may be con veyed away from the valve and valve chest, if desired.

lVhile any suitable valve stem and handle mechanism may be used on the throttle valve, I preferably construct these features and their cooperating ports as follows: A hub 35% projects from the center of the outside surface of the cover of the throttle valve chest, and is provided with an axial bore in which the valve stem 17 is rotatably mounted. This valve stem extends through and beyond the hub and inside of the cover into the valve chamber, and on its outer end a split sleeve 36 is mounted. This split sleeve is also pinned to the valve stem by a pin 37, toprevent its turning independently of the valve stem. This sleeve is also provided with a projecting stop engaging finger portion 19, that is adapted to be set toengage the stop lugs 20 and 21, that are formed on the cover and to indicate the extent of the operative oscillating movement of the throttle valve to open and close the several ports of the valve and valve seat through a cycle of its operative movement.

A, crank handle 18 is provided with a hub portion 38 that fits over the split sleeve closely and is provided with a split projecting lug portion 39, through which a clamping bolt L0 is extended and arranged to clamp the split hub of the crank handle and also the split sleeve of the finger stop engaging member to the valve stem. This arrangementprovides the crank handle with an adjustable connection to the valve stem that permits it to be set in any position an operator desires, as one operator may prefer the handle in a different position from another. The operative diiierent step positions of the valve to start and operate the different mechanisms of the machine being indicated to the operator by the finger stop engaging member 19, which is secured to the valve stem in such a relative position to the starting position of the valve and the port 22 that it engages the stop lug 20 when the valve is at its starting position, and engages the stop lug 21 when at the end of its throw in one direction, and completes its cycle when moved back to the stop lug 20.

The inner end of the valve stem is provided with a round disk-shaped head portion 41, which fits rotatably in a counterbore aperture 42 formed in the inner side of the valve chest cover, a clearance space being arranged between the back of this head and the bottom of the counterbore in which it fits, and an air vent aperture l3 extends from the bottom of this counterbore through the cover to the atmosphere. From the axial center of the disk-shaped head end of the valve stem a fiat lug 4A projects.

This flat lug extends loosely into a narrow 'slot 45 formed in the axial center portion of the top portion of the disk-shaped valve and is pinned thereto by a pin 16 that ex tends through the adjacent sides of the valve. A cupped leather washer 47 is placed around the outer end of the diskshaped head end of the valve stem in a counterbore 18, formed in the inner side of the cover of the valve chest to receive it. The counterbore is interiorly threaded, and a ring 49 is threaded to the counterbore, and is arranged to clamp the cupped Washer against the peripheral surface of the head of the valve stem and against the bottom of the counterbore, and thus packs the head of the valve stem against leakage of air from the valve chamber around it to the atmosphere through the vent aperture 43.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A multiple function controlling throttle valve, comprising a valve chest casing arranged to be connected to a multiple function machine, and provided with a valve seat containing a plurality of ports extending through it in different directions, a removable cover for said chest, and an oscillating valve in said valve chest fitting said valve seat and provided with ports adapted to register in successive order with the ports of said valve chest as said valve is turned, a stem connected to said valve projecting through said cover, a stop-engaging finger on said stem, stop-lugs on said cover arranged to be engaged by said stop-engaging finger to define the extent of the opening and closing movement of said valve, and means adjustable with respect to said step engaging finger for rotating said stem and valve.

2. A multiple port containing and controlling throttle valve, comprising the valve chest casing provided with a valve seat containing a plurality of ports, and having a cover, a valve pivotally mounted on said seat and provided with a plurality of ports adapted to register with the ports of said valve chest, a valve stem pinned to said valve and extending through and beyond said cover, a stop-engaging finger provided with a split hub portion fitting loosely over said stem, a handle provided with a split hub portion fitting over the split hub of said other split hub portion and arranged to clamp said stop-engaging finger and said handle to said stem in different but predetermined positions relative to each other, and means for limiting the extent of move ment of said finger.

3. In a multiple port containing and controlling valve, the combination of the valve chest casing provided with an actuating fluid inlet aperture and with a circular valve seat portion, said valve seat being provided with a plurality of ports arranged in radial order concentrically to a common center and at a predetermined distance apart, said casing being also provided with a removable cover, with a disk-shaped valve having a pair of substantially oppositely arranged inlet ports, and an exhaust port on one side of said valve between said inlet ports, and a seat portion on its opposite side between said inlet ports, said valve being pivotally centered on said seat and arranged to open as it is rotatably turned in one direction the ports of said valve seat, and to close said ports when turned back in the opposite direction, and means including a valve stem secured to said valve and extending through and beyond the cover of said casing for turning the valve, means including a packing material for packing said stem in said cover, the split stop-engaging finger member secured to said valve stem outside of said cover and arranged to be clamped to said stem, the split handle arranged to fit over said finger-member and provided with a clamping bolt arranged to clamp both the finger-member and the handle to said valve stem in different relative positions to each other.

4. A valve -mechanism, comprising a valve-casing provided with a wall having rearwardly extending passages, and a forward valve-chamber; a rotatable diskshaped valve in said valve-chamber having diametrically opposite sector-shaped cutout portions forming fiuid-passages extending through the circumference of said valve and adapted to be made to register with said rearwardly extending passages, a rearwardly opening exhaustpocket in said valve between said cut-out portions, and a fiat seat-portion opposite said exhaust-pocket; and means outside the casing for rotating said valve.

5. A multiple function throttle-valve, comprising a valve-chest provided with an air entrance chamber land with a valve-seat containing air conduit ports, a valve seated in said valve-chest against its seat portion, a removable cover on said valve-chest, a valve-stem loosely connected at one end to said valve and extending rotat-ably through and beyond said cover, stop-lugs on the outside of said cover positioned to define the oscillatory movement of said valve when opening and closing the ports in said valvechest, a split hub mounted on said valvestem outside of said cover and provided with a stop engaging finger and arranged to be clamped to said valve-stein, and a pin extending through said hub and through said valve-stem, said finger indicating the position of the ports of said valve relative to the ports of said valve-chest, said stop finger being arranged to engage said stopindependent of the position of said stop engaging finger of said valve-stein.

In testimony whereof I affix my signature in presence of tWo Witnesses.

JOHN GEORGE LEYNER.

Witnesses:

GEORGE E. GUEVIL, G. SARGENT ELLIOTT.

lugs on said cover and a crank handle provided with a split hub portion arranged to fit over the hub of said stop finger and provided with a clamping bolt arranged and adapted to clamp said cranl: handle and the hub of said stop finger to said Valve-stern, whereby said crank handle can be clamped to said valve-stem in any desired posit-ion Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

